Asteroides y Cometas

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Asteroides y Cometas

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Órbitas de NEO ( Near Earth Objetcs )

Near Earth Asteroid Orbit Types

Group	Description	Definition
NECs	Near-Earth Comets	`q`<1.3 AU,`P`<200 years
NEAs	Near-Earth Asteroids	`q`<1.3 AU
Atiras	NEAs whose orbits are contained entirely with the orbit of the Earth (named after asteroid 163693 Atira).	`a`<1.0 AU,`Q`<0.983 AU
Atens	Earth-crossing NEAs with semi-major axes smaller than Earth's (named after asteroid 2062 Aten).	`a`<1.0 AU,`Q`>0.983 AU
Apollos	Earth-crossing NEAs with semi-major axes larger than Earth's (named after asteroid 1862 Apollo).	`a`>1.0 AU,`q`<1.017 AU
Amors	Earth-approaching NEAs with orbits exterior to Earth's but interior to Mars' (named after asteroid 1221 Amor).	`a`>1.0 AU, 1.017<`q`<1.3 AU
PHAs	Potentially Hazardous Asteriods: NEAs whose Minimum Orbit Intersection Distance (MOID) with the Earth is 0.05 AU or less and whose absolute magnitude (H) is 22.0 or brighter.	`MOID`<=0.05 AU, `H`<=22.0